package pos.presentacion;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import pos.dominio.*;
import java.util.*;

public class FrontController extends HttpServlet {

	


   
    
	
	public void init() throws ServletException {
		
	}

	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
			processRequest(request, response);

	}

	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		processRequest(request, response);
	}

	public void processRequest(HttpServletRequest request,HttpServletResponse response) throws IOException, ServletException {
		if (logado(request)) {
			String resource = request.getParameter("res");
			RequestDispatcher d = request.getRequestDispatcher(resource);
				if(d!=null){
					d.forward(request,response);
				}
			
				System.out.println("LOGADO ACCEDIENDO A " + resource);
		}
		else {
			response.sendRedirect("error.html");
		
		}

	}

	private boolean logado(HttpServletRequest request) {
		boolean logado = false;

		HttpSession session = request.getSession(false);

		String userForm = request.getParameter("name");
		String passwdForm = request.getParameter("pass");

		if (session == null) {
			session = request.getSession();
			if (userForm == null || passwdForm == null
					|| userForm.length() == 0 || passwdForm.length() == 0) {
				logado = false;

			} else {
				if (valido(userForm, passwdForm)) {
					logado = true;
					session.setAttribute("session.user", userForm);
				} else {
					logado = false;
				}

			}

		} else {
			if (userForm == null || passwdForm == null) {
				logado = true;
			} else {
				if (valido(userForm, passwdForm)) {
					logado = true;
					session.setAttribute("session.user", userForm);
				} else {
					logado = false;
				}

			}
		}
		return logado;
	}

	public boolean valido(String userForm, String passwdForm) {
		
		boolean res = false;
		List usu = UsuarioStore.getInstance().getUsuario();
		for (Iterator iter = usu.iterator(); iter.hasNext();) {
            Usuarios p = (Usuarios) iter.next();
			if(userForm.equals(p.getIDUsuario()) && passwdForm.equals(p.getClave())){
				
				res=true;
			}
		}
		return res;

	}

}